SECTION –A (Multiple Choice Questions) Q.1) b Q.2) c Q.3) d ...

MUZAFFARPUR INSTITUTE OF TECHNOLOGY, MUZAFFARPUR

Model Solutions of Mid Term Exam

B. tech- 7th

semester (Civil Engineering Department)

Subject:- Foundation Engineering

SECTION –A (Multiple Choice Questions)

Q.1) b Q.2) c Q.3) d Q.4) b Q.5) a Q.6) b Q.7) b

Q.8) a

SECTION – B

Ans 1:-

Site investigations are generally done to obtain the information that is useful for

one or more of the following purposes:-

1) To select the depth and type of foundation for a given structure.

2) To determine the Bearing Capacity of soil.

3) To estimate the probable maximum and differential settlements.

4) To establish the ground water level and to determine the properties of water.

5) To predict the lateral earth pressure against retaining walls and abutments.

6) To select suitable construction techniques.

7) To predict and to solve potential foundation problems.

8) To ascertain the suitability of soil as a construction material.

9) To investigate the safety of the existing structures and to suggest remedial

measures.

STAGES IN SOIL INVESTIGATION:-

Stage 1 – Reconaissance

It includes visit to the site to study the map and relevant records. It helps in

deciding future programme of site investigations, scope of work, methods of

exploration to be adopted, types of samples to be taken, lab testing and in-situ

testing.

Stage 2 – Preliminary Exploration

Aim of this stage is to determine the depth, thickness, extent and composition of

each soil stratum at the site. Depth of bed rock and ground water table is also

determined.

Stage 3 – Detailed Exploration

Purpose of this stage is to determine the engineering properties of the soil in

different strata. It includes extensive boring, sampling and testing of samples in

laboratory. Field Tests such as vane shear test, plate load test, permeability test are

done to determine the properties of the soil in natural state. For complex projects

involving heavy structures such as bridges, dams, multi-storey buildings, it is

essential to have detailed explorations.